[비즈한국] A massive structural transformation is expected in the Korean real estate market in 2026. This is the year when the “mandatory holding period for long-term rental business operators” begins to expire in earnest. Hundreds of thousands of private rental homes, which surged in number after the government encouraged registration as rental businesses between 2017 and 2018, will complete their 8-year mandatory rental period and be released onto the market.
As these properties, which were previously tied up by tax benefits and regulations, are converted into “freely tradable listings” en masse, we will witness a so-called “market reset phase” where prices, yields, and rents are simultaneously recalibrated.
This change should not be viewed merely as a short-term price drop or supply shock. Instead, it should be interpreted as a structural opportunity and the starting signal for a redistribution of assets.
Rental Business System, the ‘Provider Generation’ Created by the Government
Starting in late 2017, the government actively encouraged registration as rental business operators, citing the need to stabilize the Jeonse (lump-sum deposit) and monthly rent market. Exceptional benefits were granted, including substantial reductions in acquisition tax, property tax, capital gains tax, and comprehensive real estate holding tax, provided the rental period was maintained for at least 8 years.
The result was explosive. In 2018 alone, over 150,000 people across the country registered as rental business operators, and the number of registered homes exceeded 800,000. These were concentrated particularly in popular areas such as Gangnam, Songpa, and Seocho in Seoul; Seongnam, Yongin, and Goyang in Gyeonggi; Yeonsu in Incheon;
and Haeundae and Suyeong in Busan. Investors during this period were a kind of “rental operator generation” born out of the government’s policy incentives.
However, due to the reduction of the system and the abolition of benefits after 2020, these investors are now facing a situation where they have no choice but to return to the market in large numbers starting in 2025–2026, when the 8-year period concludes.
600,000 Expiring Units: A Supply Bomb or a Window of Opportunity?
According to data from the Ministry of Land, Infrastructure and Transport, the mandatory rental period for approximately 600,000 of the long-term rental homes registered in 2018 will end by 2026. In Seoul alone, this accounts for about 24,000 units, and over 200,000 units in Gyeonggi-do.
About half of these are apartments, while the rest are officetels, multi-household houses, and multiplex houses. On the surface, it sounds like a supply bomb, but in the actual market, different repercussions are expected depending on the region.
First, in the Gangnam, Songpa, and Seocho areas of Seoul, demand is robust, so even if expiration-driven listings appear, they are highly likely to be absorbed immediately. Conversely, non-brand older apartments or officetels and villa-style rental homes could quickly turn into urgent fire-sale listings the moment rental demand wanes.
Therefore, the market in 2026 is more likely to evolve into a “polarization by property type” rather than a uniform crash.
Strategies Vary by Region
① Seoul Core Areas: Scarcity and Replacement Demand
In the "Gangnam 3-gu" and areas like Songpa, Seongdong, and Dongjak, listings nearing their 8-year expiration are inherently rare. Even if price corrections occur,
complexes supported by good school districts, transportation, and brand value will immediately be absorbed by “move-up demand.” The investment strategy for these regions is: “Temporary decline = Entry opportunity.”
On the other hand, non-brand older complexes without prospects for remodeling may face significant corrections due to increased supply. Ultimately, location and the feasibility of remodeling will determine the outcome.
② Gyeonggi Region: The Turning Point for Seongnam, Yongin, and Goyang
Seongnam, Yongin, and Goyang are key regions where the 8-year cohort is concentrated. While Bundang and Pangyo have a strong base of actual residents and high absorption capacity, areas like Suji, Giheung, and Ilsan could see deeper price corrections if Jeonse ratios fall.
However, a “buy at fire-sale prices and re-rent” strategy works well in this segment. Purchasing small apartments or officetels with a monthly rent yield of over 4–5% relative to the deposit at a low price, and then re-renting after remodeling, can secure a stable cash flow.
③ Metropolitan Areas: Volatility is Profit
Major locations in metropolitan cities, such as Haeundae/Suyeong in Busan, Songdo/Yeonsu in Incheon, and Suseong-gu in Daegu, are also places where 2018 registrations were concentrated. In particular, a large volume of officetels completed in 2017–2018 is highly likely to enter the market all at once in 2026.
These regions will experience a combination of vacancies and price drops, but that very moment becomes the timing for entry. If the Jeonse ratio is above 60%, a strategy of remodeling followed by conversion to monthly rent is valid; if it is below 50%, a strategy of fire-sale purchase followed by resale is effective.
Investors must look at the “structure.” The essence of the 2026 rental expiration phenomenon is not just an increase in volume. It is a fundamental realignment of the market structure as properties previously tethered by regulations are simultaneously liberated. Therefore, investors must pay attention to structural changes rather than just prices.
Capturing Fire-Sales Created by Tax Risk
Once tax benefits disappear after expiration, the burden of comprehensive real estate holding tax and capital gains tax increases sharply. Fire-sale properties emerging at this time become buying opportunities for short-term profit-seeking investors.
Utilizing the Rental Market Reset: As rental-registered units leave the system, Jeonse supply may decrease, potentially reigniting a Jeonse crisis. Purchasing expiring listings and converting them into monthly rental products can generate stable returns of 5–6% per year.
Improving Profit Structure Through Remodeling
Apartments or officetels that were untouched during the mandatory period have the potential for a 20–30% rent increase just through renovation. You can aim for both capital gains and rental income. Risk management is, in itself, profit.
However, not all expiring listings are opportunities.
First, if the timing coincides with the end of the capital gains tax surtax deferral (May 2025), there could be a massive influx of sell-side listings, leading to deeper price drops. Second, if high interest rates persist, investment demand will be limited, and sellers unable to hold on will increase forced liquidation. Third, in regions with high vacancy risks, maintenance costs may exceed monthly rental income.
Taking these risks into account, one must adhere to basic principles: fixed-rate loans, selecting properties near subway stations or near major employment hubs, and maintaining a monthly rent yield of at least 4% relative to the deposit.
Reading the Terrain of Expiring Listings via Data
This is no longer an era to operate on “gut feeling.” Using prop-tech technology, one can check the increase or decrease of rental listings, deposit trends, and changes in the floating population in real time.
Platforms like Asil, Value Map, Zigbang, and Real Estate Jine offer useful indicators such as “new rental listings in the last 7 days,” “price reduction ratios,” and “multiple registrations in the same building.” Using the “Registered Private Rental Housing Dataset” provided by the Public Data Portal, one can also analyze areas with high densities of registered units down to the eup/myeon/dong level. Cross-referencing this data narrows the focal points of the 2026 expiration bomb to locations like Munjeong-dong in Songpa, Jeongja-dong in Bundang (Seongnam), Pungdeokcheon-dong in Suji (Yongin), Baekseok-dong in Goyang, and Songdo-dong in Incheon. Data is the “future map” of the market.
Rental Expiration: A Structural Opportunity, Not a Crisis
Ultimately, the 2026 rental expiration phenomenon is the end of a cycle—policy, supply, rental, tax, and price—that the Korean real estate market has experienced over the past decade, and it serves as a new beginning. To some, it is the prelude to a tax bomb, but to others, it is the first investment opportunity where price distortions have been resolved. The winners are those who read the structure amidst the fear.
“The market resets after a shock. The government creates systems, and the market finds the gaps to move. True opportunity comes not from policy, but from expiration.”
In 2026, Korean real estate faces another turning point. It is an end for some, and a departure for others. What we must do now is not predict, but prepare. When the expiration-driven listings pour out, who understands the structure and seizes the lead—that answer will determine the real estate scorecard for the next 10 years.
Kim Hak-ryeol, director of the Smart Tube Real Estate Research Institute and famous under the pen name "Pashong," previously served as a team leader at the Real Estate Research Division of Gallup Korea. He manages and hosts the Naver blog “Pashong’s World Exploration” and the YouTube channel “Stew TV.” His books include “The Rewritten Guide to South Korean Real Estate (2025),” “The Power of Gyeonggi Real Estate (2024),” “The Absolute Principles of Seoul Real Estate (2023),” “The Future of Incheon Real Estate (2022),” “Kim Hak-ryeol’s Absolute Principles of Real Estate Investment (2022),” “The Future Map of South Korean Real Estate (2021),” and “From Now On, Only Rising Areas Will Rise (2020).”